Because it's the most abundant element in the universe ... to the original ones on the map. They could even tell how long ago the Voyager spacecraft left Earth. Back before laptops and cell ...

Explore the universe with news ... Mission control on Earth receives that data in binary code, or a series of ones and zeroes. But since November, Voyager 1’s flight data system had been stuck ...

Voyager 1, the most distant human-made object from Earth, is behaving strangely. It's not easy to diagnose and fix problems from 15.1 billion miles (24.4 billion kilometers) away, but NASA is trying.

Nasa has picked up a "heartbeat" signal from its Voyager 2 probe ... of miles away from Earth, the space agency said. Last month, the spacecraft - exploring the universe since 1977 - tilted ...